Polishing and grinding wheel



(ModeL) T. C. BELDING,

PDLISHING AND GRINDING WHEEL.

. 12 .1, Patented Nov. 7, 1882..

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UNITED STATES PATENT OFFICE.

THOMAS C. BELDING, OF \VAYNESBURG, OHIO.

POLISHING AND GRINDING WHEEL.

SPECIFICATION forming part of Letters Patent No. 267,132, dated November7, 1882.

Application filed March 29, 1882.

T 0 all whom it may concern Be it known that I, THOMAS C. BELDING, ofWaynesburg, in'the county of Stark and State of Ohio, have inventedcertain new and useful Improvements in Polishing and Grinding Wheels;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it pertains to make and use it, reference being had to theaccompanying drawings, which form part of this specification.

My inventionrelates to an improvement in polishing and grinding wheels;and it consists, first, in the combination, in a grinding and polishingwheel, of a series of spring-actuated polishing-pads, the end of one padbeing made to overlap the end of the next adjoining one; second, in thecombination of the wheel or body, having a groove in its edge, with aseries of spring-actuated arms, which are pivoted in the groove, andprovided with polishing or grinding pads which overlap each other, so asto form practically a continuous surface; third, in the combination, ina polishing and grinding wheel, of a grooved body or wheel, arms pivotedin the groove, springs placed under the arms, stops to limit the outwardmove.- ment of the arms, and grinding or polishing pads, which areapplied to the ends of the arms; fourth, in the combination, in a grinding and polishing wheel, of a series of arms with the pads which aregrooved on their inner sides, so as to catch over the ends of the arms,and bolts to hold them in place, all of which will be more fullydescribed hereinafter.

The object of my invention is to provide a wheel for polishing andgrinding which has practically a spring or elastic surface, so that thearticle applied to the surface will drag upon the cushion or pad, andthus enable much better work to be performed.

Figure l is a side elevation of myinvention complete, a portion of theside of the wheel being removed for the purpose of showing the arms.Fig. 2 is an edge view of the wheel, showing the groove. Fig. 3 is aperspective of one of the detachable pads.

A represents a body or wheel, which has an opening, B, through itscenter to fit upon the driving-shaft, and which has the groove 0 made inits surface to receive the arms D, which (MOdeL) carry the polishing andgrinding padsE. The wheel A may be made in one solid piece, or may bemade in a number of pieces, as convenience may dictate. The arms D willbe made of the shape here shown, or any other that maybe preferred, andwhich are pivoted in the groove 0, upon suitable pivotal bolts, F, orany other suitable devices. In order to prevent these arms frombeingthrown outward by centrifugal force, the bolts G, or any othersuitable means or devices, are passed through the sides ofthe wheel, soas to catch over their outer edges or any other suitable means ordevices may be employed as stops for this purpose. In order to hold thearms pressed constantly outward, a suitable spring, H, of rubber, metal,or any other suitable material, is placed under the outer end of eacharm, as shown, and which spring will serve to keep the arm pressedconstantly outward as far as its stop will allow, and at the same timeto allow the arm to yield inward whenever any pressure is applied to theouter surface of the pad. Each one of the pads E has a suitable socketformed on its inner side, so as to catch over the outer end of the arm,and each pad is secured inplace uponits arm by means of a bolt, J, orany other suitable device, which may be passed directly through the earson the side of the pad and the arm, or applied in any other suitablemanner. The end of each pad should be made to extend a slight distancebeyond the end of the nextadjoining pad, so as to overlap, and thusprevent small articles-such as wire and pieces of metalfrom dropping inbetween the arms, and thus interfering with their working. By thisarrangement the pads will form practically a continuous and elasticsurface to the wheel.

When the wheel is in operation the article to be ground or polished isheld to the surface of the wheel with force enough to press the pad orcushion inward toward the center of the wheel, and as the cushion passesoff the article being polished or ground the spring throws the cushionoutward from the center as far as the stop for the arm will allow. Thishas the effect of dragging the cushion or pad on the surface of thearticle, which others have sought to obtain heretofore by the use ofrubber, felt, cotton, brush-wheels, and other devices.

I am aware that brushes have been secured ICC to a revolving wheel bymeans of spring-arms, or held upon springs which allow the brushes to bepressed inward, and this I disclaim. My invention differs from this inusing a grooved wheel, to which a series of long arms are pivoted, andwhicharms are provided with grinding-pads, which form practically acontinuous grinding-surface.

Having thus described my invention, I claim- 1. In a grinding andpolishing wheel, the combination of a series of spring-actuatedpolishing-pads, the end of one pad being made to overlap the end of thenext adjoining one, substantially as shown.

2. The combination of'the wheel A, havingthe groove 0, and a series ofspring-actuated arms, which are pivoted in the groove, and provided withpolishing or grinding pads which overlap each other, so as to formpractically a continuous surface, substantially as described.

3. In a polishing and grinding wheel, the combination of the groovedbody A, the arms D, pivoted in the groove, the springs H, placed betweenthe arms, and the stops G, the grinding-surfaces of the arms being madeto'form almost a continuous surface around the wheel, substantiallyasset forth.

4. In a grinding and polishing wheel. the combination of the arms D withthe pads E, grooved on their inner sides, so as to catch over the endsof the arms, and held in place at their lower ends by the bolts J,substantially as specified.

5. The combination of a grooved wheel, a series of pivoted arms, eachone of which is provided with a polishing pad or cushion, and suitablestops for preventing the arm from being thrown too far outward bycentrifugal force, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

THOMAS C. BELDING.

Witnesses:

JOHN SHAEFFER, ROBERT C. FAWGETT.

